The position of a crate sliding down a ramp is given by x = (0. 25t2) m, y = (1.

Question

The position of a crate sliding down a ramp is given by x = (0. 25t2) m, y = (1. 5t2) m, Z = (6 - 0. 75t ) m. Where t is in second. Determine the magnitude of the crate's velocity and acceleration when t = 2 s. A rocket is fired from rest at x = 0. and travels along a parabolic trajectory describe by y2 = [120(103)x] m. If the x component of acceleration is ax = (1/4t2) m /x2, where t is in seconds determine the magnitude of the rocket's velocity and acceleration when t = 10 s. The particle travels along the path defined by the parabola y = 0. 5x2. If the component of velocity along the x axis is vx = 50 ft/s, where t is in seconds.

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